max9777etit Maxim Integrated Products, Inc., max9777etit Datasheet - Page 22

• Manufacturer Part Number: max9777etit
• Description: Max9777, Max9778 Stereo 3w Audio Power Amplifiers With Headphone Drive And Input Mux
• Manufacturer: Maxim Integrated Products, Inc.

Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
22
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
MICROCONTROLLER
CODEC
HPF
HPF
1µF
0.68µF
0.68µF
0.68µF
0.68µF
0.1µF
15kΩ
15kΩ
15kΩ
15kΩ
17
19
20
15
28
14
5
6
1
2
4.5V TO 5.5V
BIAS
INL1
INL2
INR1
INR2
IN1/2
MUTE
GAINA/B
HPS_EN
SHDN
3, 4
18
GND
V
MAX9778
DD
PV
PGND
GAINRA
GAINRB
GAINLB
GAINLA
OUTR+
OUTL+
Typical Application Circuits (continued)
OUTL-
OUTR-
DD
11, 25
9, 13, 23, 27
HPS
8
7
10
12
26
24
21
22
16
0.047µF
0.047µF
100µF
27.4kΩ
33.2kΩ
33.2kΩ
27.4kΩ
15kΩ
15kΩ
47kΩ
220µF
220µF
10kΩ
4.5V TO 5.5V
10kΩ
680kΩ